fix: correct snapshot order for unused-custom-errors detector

Author: ep0chzer0

tests/e2e/detectors/snapshots/detectors__detector_UnusedCustomErrors_0_8_4_unused_custom_error_sol__0.txt

@@ -1,6 +1,6 @@
 TopLevelUnused() (tests/e2e/detectors/test_data/unused-error/0.8.4/unused_custom_error.sol#5) is declared but never used
 
-UnusedErrorTest.Unauthorized() (tests/e2e/detectors/test_data/unused-error/0.8.4/unused_custom_error.sol#12) is declared but never used in UnusedErrorTest (tests/e2e/detectors/test_data/unused-error/0.8.4/unused_custom_error.sol#10-35)
-
 UnusedErrorTest.InvalidAmount(uint256) (tests/e2e/detectors/test_data/unused-error/0.8.4/unused_custom_error.sol#18) is declared but never used in UnusedErrorTest (tests/e2e/detectors/test_data/unused-error/0.8.4/unused_custom_error.sol#10-35)
 
+UnusedErrorTest.Unauthorized() (tests/e2e/detectors/test_data/unused-error/0.8.4/unused_custom_error.sol#12) is declared but never used in UnusedErrorTest (tests/e2e/detectors/test_data/unused-error/0.8.4/unused_custom_error.sol#10-35)
+